Smallville S10x21 and Smallville S10x22 “The story of Clark Kent (Tom Welling) culminates in this epic two-hour series finale as Clark takes the last step to becoming the Man of Steel. With surprise guest appearances, nods to the first few seasons of the series and Michael Rosenbaum’s return as Lex Luthor, this final episode wraps up a decade-long story following one man’s journey to becoming the world’s greatest superhero. Erica Durance, Allison Mack, Justin Hartley, Cassidy Freeman, John Glover, Annette O’Toole and John Schneider also star.”